A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 2925-00-301-0933
NSN 5998-01-478-7026
NSN 6645-00-006-6387
NSN 5895-00-049-6313
NSN 6650-00-172-7519
NSN 6130-00-839-3227
NSN 5999-00-311-4347
NSN 6145-01-495-2671
NSN 5855-01-385-8846
NSN 5950-01-392-1397
NSN 5945-00-628-3695
NSN 6645-00-770-3742